(It’s Island Week 2 here at GSS, which means we’ll mostly be posting about Islands. For about a week.) On the mighty Mississippi River, Memphis, Tennessee, is Mud Island, which is home to a steamboat museum, restaurants, an outdoor amphitheatre and some nice large type. Okay, technically Mud Island isn’t actually an island, but rather a small peninsula. However, it does contain a hydraulic scale model of the lower Mississippi recreated in miniature all the way from Cairo, Illinois south to New Orleans! Which probably makes this the world’s only model of a river on an island (that’s…